Status

()

For bugs in Firefox Desktop, the Mozilla Foundation's web browser. For Firefox user interface issues in menus, bookmarks, location bar, and preferences. Many Firefox bugs will either be filed here or in the Core product. Bugs for developer tools (F12) should be filed in the DevTools product. (more info)

The energy drain of FF 25.0.1 during idle on Windows, Linux and OSX are very similar in my tests:
- the donate gif in about:home is draining up to 33% more energy wrt. the idle machine
- without the donate gif FF does not seem to drain any additional energy

Even though Intel Power Gadget doesn't seem to show any statistically significant drain during idle on my machine, there are some wakeups triggered due to mainly:
- bug 951713
- bug 951671
- Watchdog
- nsIdleService
- gfxFontCache::WordCacheExpirationTimerCallback (disabled in release)
were the last three are required but have a low frequency. I suspect that the power drain is difficult to spot when profiling "short" intervals (1-10min) whereas the effect could be visible over much longer intervals.